.btmbk {
    border: 10px solid hsla(0, 0%, 100%, .5);
    background: white;
    width: 100px;
    height: 100px;
    background-clip: padding-box;
}

.dcbk {
    background: yellowgreen;
    box-shadow: 0 0 0 10px #655, 0 0 0 15px deeppink;
    cursor: pointer;
}

.dcbk2 {
    margin-top: 30px;
    background: yellowgreen;
    border: 10px solid #655;
    outline: 5px solid deeppink;
}

.fbxg {
    outline: 2px dashed #fff;
    outline-offset: -25px;
    border-radius: 5px;
    width: 200px;
    height: 200px;
    background: #6F5B5A;
}